Fluid fuel stove and method of making the same



Dec. 23, 1941. E. A. LINDEMANN 2,266,881

ELUID FUEL STOVE AND METHOD OF MAKING THE SAME Filed May 11, 1957 2 Shets-Sheet 1 ZH 7 l Dec. 23, 1941.

E. A. LINDEMANN FLUID FUEL STCVE AND METHOD OF MAKING THE SAME Filed May 1 .1 195'] 2 Sheets-Sheet 2 BY V.,.,.

ATTORNEY.

Patented Dec. 23, 1941 FLUID. FUEL STOVE AND METHOD or MAKING THE SAME Eugene A Lindemann, Milwaukee, wis assignor l to A. J. Lindema'nn & Hoverson Company, Milwaukee, Wis. a. corporation of Wisconsin Application May 11, 1937, Serial No. 141,891

4 Claims. (01. 29-148)} The improvements relateprimarily to cooking stoves employing liquid hydrocarbon fuel,- but may be applied to stoves for other purposes and employing gaseous or other fuel.

The objects of the improvements, among others, are to produce a stove of this general character of very simple, strong and serviceable construction at a minimum cost for labor and materials, by simplifying the structure and parts thereof and so forming the parts that they may be made and assembled quickly and by the employment of a few simple manufacturing operations, principally mechanical, and to thus eliminate the expense and uncertainty of manual work as faras possible.

Other objects and advantages will appear from the following descriptiona'nd the accompanying drawings, referred to therein, and in which- Fig. 1' is a perspective top view of the cover;

Figs. 2 and 3 are perspective inside views of back and end members respectively before assembling; Fig. 4 is a transversemedial, vertical section of the stove frame assembled with a burner and fuel supply member shown in dotted lines therein;

Fig. 5 is an elevation of the burners and fuelv supply members with the lower fuel tank in longitudinal section;

Fig. 6 is a side elevation of one of the burners with its valve'sleeve mounted on the main oil supply pipe'which is'shown in cross section; on

the line 6-4 of Fig. 5; and

Fig. 7 is a plan of the parts shown in Fig. 5.

The general plan of assembling includes form ing the cover; combined back and bottom and the ends separately with integral connecting parts, then assembling them, forming the lower tank, burners and individual burner pipes with valve sleeves and uniting them with the main oil supply pipe on which they are mounted togather with the connecting straps for mounting them on the bottom so as to form an integral unit, then placing this latter structure on the bottom and securing it by the straps to said bottom. 7 The cover ,or top! is formed of a single piece of sheet material with cooking holes-2 and their depending flanges 3 and the downwardly extending-marginal flanges Lof the .top punched out downwardly turned front bottom flange; Ill and parts are; formed by punching, stamping and '20 folding a'single piece ofsheet metal so that they similarlyturned bottom side flanges ,l I, drip pan or recess l2 in the bottom and rivet holes 5' in the said top flange adapted toregister with the rivet'holes 5 of the top or cover. The corners of the bottom are notchedjas shownatlii, to provideholes therein which will prevent theaccumulation of dirt, grease,- and particles of food, and this also facilitates the bending of the bottom flanges. Thelower edgeof the frontfiang'es is folded upwardlyand inwardly-to strengthen v said edge and provide-a :rounded e'dgeflas shown. at l4, and the bottom is also provided 'with a' pair of bolt holes l5, for mounting and securing the burner'and fuel supply. unit thereon. [Theba'ck is also D fOV dednearits ends with vertical em bossments Hi to receive the inwardly foldedvertica]. edges II of the and members. ,All these are all features of a single integral unit.

- The third unit is the end member. alsofformed froma single piece of sheet metal, and comprises the end proper; l 1, outward1y turned horizontal top flange l8, inwardly turned vertical side flanges l9 and having; inwardly folded edges 2| and 22 toengage the verticalgrooves 16 of the back, the former; cutaway at. 23 and the lat- .ter at 24 to receive thebottom; edge off rthe back and the front flange lllof the bottom respectively; Thepbottomportionsf-25 and-26 of these folded edges servealso to strengthen andfreinforce the portions of the end which extendbeand stamped in one operation, also the rivet holes 5 and s. This is integral unit No. 10f the stove.

' Unit No. 2 comprises the back 1, bottom 8,

horizontally and backwardly turned top flange 9,

low the stove-bottomand formshort, .an gular legs for supporting and elevating the structure.

The ,loweredges'of thefianges l9 and 20 are turned horizontally inwardtoform feet 21. and. the bottom-edges of :the plate I! are .turned inwardly in similar manner to form'feet 28, so as to give the legs a substantial base andv prevent them from abradingany surface on which the stove may be placed,

The fourth unit is a duplicate of the third. and

forms the opposite end of-th'e stove frame. It will be seentherefore' that the two ,end members are-so formed that they'may be positioned and secured in the assembling "operation withoutregard to front or back edges,.since the construction at both ends of this element is identical. This not only facilitates assembling but also enables the maker toform the ends of these ,units by the same operation and .thesame machines.

Each end member is cutout atthe bottom to form an endopening' therein, as shown at 29, and

7 through this I opening, the burner and fuel pipe fuel supply pipe.

7 engaging with the top and back units, integral portion of the member to which these parts belong may be inserted after the frame of the stove and the said last-named member have been assembled and formed into units.

The fifth unit comprises the lower fuel tank 30, the main fuel supply pipe :3l having its ends .soldered to the bottom thereof and receiving the liquid fuel through holes 32, the branch pipes 33 communicating between the main pipe and the burner 34 mounted on said branch pipe and the valve sleeve 35 secured to and communicating with the branch pipe. A suitable valve seat in with its stem threaded in the sleeve 35 is provided to control the flow of fuel to each burner. The straps 36 are also securedto the fuel supply pipe, and all of these parts being soldered tothe branch pipe and a needle valve seating theregether constitute a single unit which i formeda before any of the burner or fuel supply parts are placed in the stove frame. The usual screw cap 31 is carried by the end of the main pipe,

After the burner and fuel supply unit has been assembled,'it may be tinned or galvanized as a unit, so that it will have an unbroken, finished rust-proof surface throughout, which it could not 7 have if soldering or brazing operations were performed after this treatment.- The positioning and, securing of this unit is also such that all 'supportingparts and the laborof applying them are dispensed with except for the straps 36, which are provided with bolt holes l5 registering with the bolt holes l5 of the bottom 3through which bolts are passed, to receive inuts under :the bottom; and by this simple operation the burner and oil supply unit is mounted and secured in the stove'frame.

In assembling the stove frame,the back, bottom, ends and top' are simply fitted together, se-

cured by bolts passing through the-bolt holes therein and spot welded at the points indicated by small dotted circles, or at other convenient places. The top'fiange l8 ofthe end unit has the topp r 7 From the foregoing it will be seen that the present invention enables the manufacturer to construct the stove in five-individual units, and to assemble these units to form a' complete stove-barring manually removable parts-by bolt holes 5' registering with the bolt holes 6 at simply fitting them' together and then applying a spot welder to overlapping portions, so formed and positioned that spot welding electrodes may be applied thereto; The top and the. straps of the burner and fuel supply 'unit could also be spot welded, but are preferably riveted or bolted, as'shown and described, to'give' them additional strength and security, the-rivet and'bolt holes being positioned to give easy access of riveting and bolt applying devices.

The burner and fuel supply unit may also be placed in'bosition and secured to the bottom before the side and top members are placed in position, agthe openings in'the side members extend to the bottom thereof and saidleg portions of the side, members will therefore straddle the WhatI claim is: d

1. The herein described fluid fuel stove which comprises four separate and distinct sheet metal units, namely, (1) a" sheet metal top provided with a "cooking hole, (2)an angular back and bottom unit, integral turned edge flanges on said unit engaging top and side units 3 and 4) two "side units, integral tumededgeflang'es thereon a supply conduit communicating between them and Joined together and said conduit fixing the position of this fifth unit on the bottom of the said back and bottom unit.

2.'The herein described fluid fuel stove which comprises four separate and distinct sheet metal units, namely, (1) a sheet metal top provided with a cooking hole, (2) an angular back and bottom unit, integral turned edge flanges on said unit engaging top and side units, (3 and 4) two side units, integral turned edge flanges thereon engaging with the top and bottom, units, integral downwardly extending portions; at the lower corners of each and bottom horizontally turned portions at the lower extremities of said extending portionsforming supporting legs and feet-one of said units being provided withan opening at its lower part of a size to receive the supply pipe and 7 burner parts of the fifth unit, thesaid four units being assembled and forming ahollow stove frame and suitable securing-means uniting the said back, bottom and side flanges with the parts between this fifth unit and the bottom back and bottom unit. a

engaged'by them, saidstove also comprising a fifth unit consisting of a lower burner member, a fuel tank. and a'connec'ting fuel supply conduit communicating between themand joined :together-Jand position fixing and securingmeans of the said 3. The herein described fluid fuel stove which comprises four separate and distinct sheet metal units, namely (l) a sheet metal top provided with :a cooking hole, (2) .an angular back and bottom unit, integral turned edge, flanges on saidunit engaging top and side units, said back portion "having recesses near its edges to receive and interengage with projectionson the side units to connect and position the parts-(3 and 4) two side units, integral turned edge flangesthereon engaging with the top and the back of the second unit said flanges for engaging the back having recess engaging projections-thereon and integral downwardly extendingportions atthe lower corners of each and bottom horizontally turned portions atthe'lower extremities of said extending portions forming supportinglegs and feet', the said four units being, assembled" and forming a hollow stove frame by being brought together and interengaged, and suitable securing means uniting the. said back, bottom andside flanges with the parts engaged by them, said stove also comprising a fifth unit consisting ofa lower burner bottom unit.

member, a fuel tank and a connecting fuel supply conduit communicating between them and joined together and. said conduit fixing the position of this fifth unit on the bottom of the said back and 4. The herein described method of making a fluid fuelstovaiwhich consists in first forming a stove frame of sheetmetal comprisingv top,

"sides, back and: bottom and-providing in a side at its bottom an opening of a size to permit the passage there'through intothe interior of thesaid frame .of a lower burner member and a fuel supply conduit on which said member is mounted of a combustion unit comprising said lower burner member, a fuel tank and fuel supply conduit connecting them, the fuel supply conduit being greater in length than the width of the stove frame and having said fuel tank at one of its ends; assembling and finishing said combustion unit outside the said stove frame then inserting said burner member and the major part of said conduit in said frame by passing them through said opening and then securing them to the bottom of said frame with the fuel tank in position 5 outside the frame and thus completing the stove.

EUGENE A. LINDEMANN. 

